Window-cleaning device.



C. J. KERN & J. E. THEBAUD.

WINDOW CLEANING DEVICE.

APPLICATION FILED 091219, 1911.

1,043,523. v Patented Nov.5,1912.

l U9 z* /7 l Mi.. i 3 llllu www* A WITNESSESI y 5 INVENTORS I l charms .LKH-n ,and J, Edward Tha'baud ,f

TINTTED STATES A,PATENT oFF-Ion. l

CHARLES J'. KERN AND JOI-IN' EDWA/RD THEBAUD, OF

THEBAUD ASSIGNOR T0 SAID KERN.

WINDOW-CLEANING DEVICE.

Patented Nov. 5, 1912. Serial No. 655,573.

To all whom it may concern.:

Be it known that we, CHARLES J. KERN and JOHN EDWARD THEBAUD, citizens of the United States, and residents of Buiialo, N ew York, have invented certain new and useful Improvements in Window-Cleaning Devices, and do hereby declare the following to be a i'ull, clear, and exact description of our invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates particularly to that class of windowV cleaners which are operated from'the inside of the window to clean the outside of the saine.

The objects of our invention areto provide simple and effective means for rotating a wiper against the window glass in a manner to insure contact throughout the full length of the wiper with the glass and to provide means for automatically moving the wiper away from the glass when rotated into position for wiping.

The details of construction of our invene tion are illustrated in the accompanying drawings in whichp Figure 1 illustrates an elevation of a win dow sash and glass with our invention in position thereon. In Fig. 2, is shown a sectional plan of our device positioned on a window sash and having the wiper held away from the glass. Fig. 3, is a perspective view of the cam and pawl att-ached. Fig. 4, is a perspective view of a portion of the shaft, showin a tongue project-ing at right angles thereq tion of the outside bearing plate.

The various parts of our device as illustrated in the gures are numbered as follows: In Fig. 1, 1 is the frame of a sash containing the glass 2, shown mostly covered with opaque particles, except within the arc 3, which is clear as left cleaned by the rotation4 of the wiper 4. Pivoted upon the arm 5 at the bolt6 is the holder 7, which supports the wiper 4. Within the circle of the magnifyingglass 8 is shown parts of the arm 5 and the wiper 4. The arm 5 is at tached to the outer end of the shaft 9, which is shown in section journaled in the plate 10. An expanded portion 11 of the shaft 9 has integral therewith a beveled tongue 12 projecting at right angles from said sha-ft.

Adapted to coperate with the tongue 125 is l `the iiat lip 13, projecting from the blockli"v om. 5, is an eleva-V 'end of the lip which is integral with the plate10. The

upper end of the block 14 has an extension4 15 projecting over the tongue 12 to limit'its pivoted by the screw 17 upon the blockl4 and has an appendage '18- which engages a flat spring 19 positioned in a postl 2Q, which post is mounted upon the plate 110. In the dotted position of 12 the point of escapement is marked 21, and the consequent depressed position of the spring is shown at 22.y 23 is a lug limiting the rotation of the tongue 12 in its down# ward movement. 24 and 25 are screws which secure the plate 10 to the sash 1.

In Fig. 2, the shaft 9 is shown bent to form the handle26.` Said shaft is illustrated.

as broken away in part to give a clear plan view of the beveled end 27 of the pawl 16.

BUFFALO, New YORK; sein the pawl 16 and the tonguer- The plate l0, shown in section in this gure has a cylindrical extension 28 posit-ioned within a hole inthe sash 1, in which is also positioned a cylindrical extension 29 inte` gral with the outer. plate 30. The outer end 31 of said extension 29 isl formed into a bearing in which is journaled the shaft 9. Within said cylindrical extensions, surrounding the shaft 9 is an annular space adapted to be occupiedby the spring 32 shown com.

pressed by the washer 33 and the pin 34 which is positioned through the shaft 9. The tongue 12 is shown pressed against the inner side of the lip 13. 4The arm 5 is attached at the end 35 by the screw 36 to the shaft 9.

The other end of said arm 5 has a bolt 6 journaling the holder 7 thereon. Within said holder is held the wiper 4 having an elastic strip 37.

In the Fig. 3, a perspective view of the detached block 14 is illustrated, having pivoted thereon the pawl 16 by the screw 17.

AThe beveled surface 27 ofv the end of the pawl 16 continues pon an extension 3S thereof which conforms to the shape of the 13 in generating a cain.

In Fig. 4,is shown a portion of the shaft 9 having the expanded portion 11 and the tongue 12 turned up to show how it is beveled in order to engage properly with the beveled surface 27 of t-he end of the illustrated inF-igs. 2 and 3.

pawl 16,

In Fig. 5, thplatez() is the saine as shown i' the tongue 12 travels over the outer face of the glass.

1n section in Fig` 2, having the outward cupshaped extension 31 in which is the hole 39 adapted to have journaled therein the shaft referred to in Connection with the other iigures. Lt0 and 41 are countersunk screw holes through which screws are passed when attaching the said plate 30 to the outside of the sash.

Having described the various parts in connection with the figures, their respective functions in operation are as follows: The handle 26, shown in F ig. 2 as being parallel to the varm 5, isl adapted te be turned through an angle a little greater than 90 degrees, being limited by the extension 15 and the lug 23. Assuming that the handle 26 is in the uppermost position to start with, the tongue l2 will be outside of the lip 13, having been forced in that position by the action of the spring 32 through the washer 33, the pint34 and the shaft 9. In this position the wiper will be pressed against the glass 2, on'the outside on account of the inward thrust of shaft 9 with which it is ccnnected. As the handle is turned downward the lip 13 and the wiper remains in contact with the glass as it in consequence travels downward over the outside of the glass. 1n the continued rotation of the handle 2S the tongue 12 engages the pawl 16 depressing it andthe spring 19 until vthe end of the tongue escapes, in further travel, from the pawl 16 and clears the same coming in contact with the .lug 23; which limits its further movement.` The pawl then being free to be acted upon by the spring 19, regains its former position in relation to the lip `13 and in so doing has positioned the beveled surface 27 of the pawl 16 in behindthe tongue 12. In the rotation of the handle just described the wiper has been caused to sweep over and in contact with the outside of the glass dislodging any foreign matter in its path that is easily removed, such as snow, rain or soot and has taken a perpendicular position. New, upon reversing the rotation of the hanl dle 26, the tongue, which isbeveled, engages the beveled surface 27 and incontinued rotation is forced toward the sash, causing the shaft to move outward, compressing the spring 32 and carrying the wiper away from Further motion in the same direction brings into play the cam-action of the pawland lip in conjunction with the beveled tongue and in the continued upward journey of the wiper it is held off from the surface of the glass until the tongue 12 escapes from the upper end of the lip 13 and being released, the spring then comes into play by exerting its pressure to force the shaft into-the first position assumed as above describedyfromwhich position the operation may be repeated in wiping again the outer surface of the glass." The advantage gained in automatically holding the wiper away from the glass during its upward movement and against the glass in its downward movement resides in the fact that in operation the wiper is used in action in the most natural way for best results in traveling over the surface of the glass whereby the foreign matter is swept to one side and left there without dragging part of it back as happens with other forms of wipers which keep the wiper pressed against the surface of the glass during both movements of the wiper. l

lVe are aware that there are other devices for wiping windows employing the combination of a shaft, a handle, an arm, a spring, and a wiper held against the glass by the pressure of the spring along the shaft and operated from the inside of the window but we know of no device of this kind which automatically operates by means of a camaction of its parts to cause the wiper to leave the glass and be held away therefrom during one of its rotary movements and is locked against any outward movement during most of the journey of the wiper in contact with the glass as happens with our device by virtue of the movement of the tongue 12 over the outside of the lip 13 during the said last mentioned journey.

Having described our invention, we claim,

l. A window cleaner, comprising a shaft providedy with a wiper at one end, a handle at the other end, an operating spring and a bearing for the shaft, a cam operating mechanism comprising a lip formed integral with said bearing and disposed in spaced relation thereto, the inner side of said lip being beveled, a pivoted pawl mounted on said bearing and having a beveled portion overlapping the inner side of said lip to provide a two-part cam surface, and means whereby upon operation of said handle the shaft is rotated and the cam mechanism operated in governing the movement of the wiper.

2. A window cleaner, comprising a shaft provided with a wiper at one end and having a handle at the other end, and also provided with a projecting tongue intermediate its ends and having an operating spring on the shaft and a bearing for the shaft, a cam operating mechanism comprising a beveled lip and a pawl having a beveled part cooperating with the beveled portion of the lip to form a cam surface, said bearing having lugs spaced from the lip and providing stops for engagement by the projecting tongue of the shaft' to limit rotational movement of the latter, said tongue operating over said cam surface and forcing the shaft longitudinally from its normal position, the

shaft being forced by said spring auto- 'with the tongue forced to the outer lside of Said-lip, rotation of the sha-ft in the opposite direction by its handle bringing said .ton-gue into eng ent with 'sai paw1.. and de` pressing 1t, said pawl returning to itsj.n' or mal position' automatically as said tongue engages the other of'said stop lugs.

A window c1eaner,rcompris1ng a shaft on the repermit the tongue, to -r4eturn to its normal position, the movable part ofthe cam mechanism ass vits normal position when v provided with a wiper at one end, an operatthe tongue `escapes .therefrom on its reverse ing spring on the shaft, a bearing for the stroke; l. shaft, means including a'crank'handle, ya j tCHARLES &T.KERN. A, l cam operating mechanism consisting of ahf'lHEBAUDQ fixed and a movablepart, and a tongne'on :Witnesses' f said shaft to engage the fixed and. movable' R. L.HGRAHA1I,`

parts ofv the -cam mechanism to move the Copies of 'this` patent may be obtained for ve cents each, ljy laddressing the "Commissioner .of Patents,

Washington, D. 0V. .l 

